president obama has been very careful. he has only said he would not allow iran to get a nuclear weapon. and it sounds like they're splitting hairses but they're talking about two different things. if the red line for the israelis is a capability the iranians may be close to that. if it's a weapon it may be pretty far from that . >> rose: let's north korea and the new secretary of defense saying we want to have the capacity to stop the north koreans if they decide to make an attack on the united states. do we have that technology now? >> what we have no is about 30 anti-missile batteries set up n alaska just south of fair banks and in california. and their success rate is pretty limited, charlie. when they are tested against dummy warheads, they hit about a little over 350% of those -- 50% under those ideal conditions. i would not call this a fabulous deternal. at the same time by bolstering it adding 14 over the next few years, they're trying to signal to the north koreans that the u.s. is serious about this but more impo